<div>
    <form method="POST" action="/user/123?foo=1&bar=2" >
        <h1>Test Form:</h1>
        <label>
            aaa: <input type="text" name="aaa" value="1">
        </label>
        <label>
            bbb: <input type="text" name="bbb" value="1">
        </label>
        <button type="submit">Submit</button>
    </form>
</div>